Free CompTIA JK0-023 Exam Braindumps (page: 33)

Standards such as JPEG and ASCII operate at which of the following OSI model layers?

  1. Presentation
  2. Data link
  3. Session
  4. Application

Answer(s): A



Which of the following ports would Zach, a technician, need to open on a firewall to allow SSH on the default port?

  1. 20
  2. 21
  3. 22
  4. 23

Answer(s): C



Frames are the Protocol Data Unit for which of the following layers of the OSI model?

  1. Layer 1
  2. Layer 2
  3. Layer 3
  4. Layer 4

Answer(s): B



Which of the following BEST describes a switch port?

  1. Broadcast domain
  2. Distance vector
  3. Link state
  4. Collision domain

Answer(s): D






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